________that I could use a special piece of cloth to attract people's attention, I decided to do an experiment.
I lost my way in complete darkness and ,______ matters worse , it began to rain .
The direction _______ which the president would go was kept secret ________ safety concern .
You needn’t take your shoes off when you enter someone’s house in Australia , _____ , of course , they’re very dirty .
--- Could I ask you a rather personal question ?--- ________.
At present the hotel is almost empty , but I’m sure things will start to _____ in the spring .